7. 1975 Pittsburgh Steelers
Choosing one of the four Steelers Super Bowl winners from the 1970s is difficult, as at least three of the teams deserve mention as some of the greatest Super Bowl winning teams of all time. The 1975 team lost only twice and won the 12 games by an average margin of 15 points. Pittsburgh boasted 11 Pro Bowl players during the season, many of whom gained entrance into the Pro Football Hall of Fame. Led by a pounding Franco Harris and clutch receptions from concussed Lynn Swann, the 1975 Steelers beat a very good Cowboys team in Super Bowl 10, 21-17.